Consider the question. Field goal percentage in basketball is the ratio of field goals made to field goals attempted. Its abbreviation is FG %. Although three-point field goal percentage is often calculated separately, three-point field goals are included in the general field goal percentage. Instead of using scales of 0 to 100 %, the scale. 000 to 1.000 is commonly used. A higher field goal percentage denotes higher efficiency. In basketball, a FG % of. 500 (50 %) or above is considered a good percentage, although this criterion does not apply equally to all positions. Guards usually have lower FG % than forwards and centers. Field goal percentage does not completely tell the skill of a player, but a low field goal percentage can indicate a poor offensive player or a player who takes many difficult shots. In the NBA, Center Shaquille O'Neal has a high career FG % (around. 580) because he plays near the basket making many high percentage layups and slam dunks. Guard Allen Iverson often had a low FG % (around. 420) because he took the bulk of his team's shot attempts, even with high difficulty shots.

Answer this question based on the passage: what is a good basketball field goal percentage?
 What is the step-by-step reasoning process to arrive at the answer: . 500 ( 50 % ) or above?
This is the relevant information: In basketball, a FG % of. 500 (50 %) or above is considered a good percentage, although this criterion does not apply equally to all positions.